That sucks but thanks for the quick response. I can't wait for this functionality to come out.

In fact I needed to do the same thing.

I did a workaround that helped me to get the selected row in the viewmodel.

I will post 2 ways of doing it, 1 of them can only be used if you're using CSLA and BXF, the other one can be done without using them.

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Version1

XAML Code (CSLA + BXF version):

<my1:TriggerAction MethodName="MethodHandler" TargetControl="{Binding ElementName=ElementNameFiringEvent}" TriggerEvent="SelectedRowsCollectionChanged" />

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In your case as it is the same as mine you should use that triggerevent.

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Version2

Longer workaround without using csla + bxf:

<i:Interaction.Triggers>
         <i:EventTrigger
         EventName="SelectedRowsCollectionChanged" SourceName="ElementNameFiringEvent">
            <ei:CallMethodAction
            MethodName="MethodHandler"
               TargetObject="{Binding}"/>
         </i:EventTrigger>
</i:Interaction.Triggers>

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For this one you will need to add 2 references to your project:
- Microsoft.Expression.Interactions
- System.Windows.Interactivity

And add the corresponding namespace to the xaml file:
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xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
 xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"

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Ok that's all for the XAML part.

ViewModel part

I did only this part as for using CSLA + BXF, if you're using the other version you will have to play a bit trying to get the params, etc.

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VB.NET version:

Public Sub MethodHandler(ByVal sender As Object, ByVal e As ExecuteEventArgs)
         Dim event As SelectionCollectionChangedEventArgs(Of SelectedRowsCollection) = CType(e.TriggerParameter, SelectionCollectionChangedEventArgs(Of SelectedRowsCollection))
         Dim row As SelectedRowsCollection = event.NewSelectedItems

         'With this you would get first column value from first row, in my case selection mode in the grid is
         'single
         Dim value As String = row.Item(0).Cells(0).Value.ToString()
      End Sub
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That's it. Hope it works for you too :)

Note: You  may have problems about not getting the viewmodel when firing the event, be sure to bind a viewmodel datacontext to the grid as it will look there.